RT9287 데이터 시트보기 (PDF) - Richtek Technology

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RT9287

Boost Converter for OLED Power with Dual LDO

Richtek Technology 

Function Block Diagram

Preliminary

VDD2

ENB

EN1

EN2

Current Bias

ibias

BandGap

VREF

Protection Circuit

UVLO

Timer

5ms

1.2MHz OSC

OCP

750mA

+

-

Soft Start

PWM

Logic

Buffer

+

- VREF

VREF

Shutdown

and

Logic Control

+

Error

Amplifier

MOS Driver

Current-Limit

and

Thermal

Protection

VREF

Shutdown

and

Logic Control

+

Error

Amplifier

MOS Driver

Current-Limit

and

Thermal

Protection

RT9287

LX

FB

VDD1

VLDO1

VLDO2

GND

DS9287-01 August 2007

www.richtek.com

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